潮汐流及水平潜流人工湿地污水处理效果比较研究

吕 涛; 吴树彪; 柳明慧; 鞠鑫鑫; 常永江; 陈 理; 董仁杰

文章摘要

吕涛,吴树彪,柳明慧,鞠鑫鑫,常永江,陈理,董仁杰.潮汐流及水平潜流人工湿地污水处理效果比较研究[J].农业环境科学学报,2013,32(8):1618-1624.

潮汐流及水平潜流人工湿地污水处理效果比较研究

Comparison of Purification Performance in Tidal Flow and Horizontal Subsurface Flow Constructed Wetlands

DOI：10.11654/jaes.2013.08.019

中文关键词: 人工湿地潮汐流水平潜流处理效果基质微生物

英文关键词: constructed wetlands tidal flow horizontal subsurface flow purification performance matrix microbial characteristic

基金项目:

作者	单位
吕涛	中国农业大学工学院
吴树彪	中国农业大学工学院
柳明慧	中国农业大学工学院
鞠鑫鑫	中国农业大学水利与土木工程学院
常永江	中国农业大学农学与生物技术学院
陈理	中国农业大学工学院
董仁杰	中国农业大学工学院

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中文摘要:

利用室内潮汐流和水平潜流人工湿地装置，对不同类型人工湿地污染物的去除效果进行对比试验。结果表明：潮汐流人工湿地有利于CODCr和氨氮的去除，去除率分别达到94%和95%，灯芯草水平潜流人工湿中因为湿地植物吸收和根区效应等作用使其总氮去除率达到51%，CODCr和氨氮去除率分别为76%和49%，无植物水平潜流人工湿地中CODCr、氨氮和总氮去除率最差，分别为70%、34%和36%；潮汐运行方式可改善湿地内部的氧环境，提高微生物活性，潮汐流人工湿地中微生物活性达到0.3 mg·g-1，是水平潜流人工湿地的近3倍；三组人工湿地基质微生物硝化作用强度与对应氨氮去除效果呈显著正相关关系，相关系数r=0.89（P＜0.05），表明微生物的硝化作用是主要的氨氮脱除途径，且硝化作用强度可作为反映湿地氨氮脱除能力的一个重要指标。

英文摘要:

Three laboratory-scale constructed wetlands（CWs）, namely, tidal flow CW, planted and unplanted horizontal subsurface flow CWs, were set up comparing the purification performance in this study. At the same influent concentration, the results showed that tidal flow operation can improve the oxygen condition in the wetland bed. CODCr and ammonium removal were approximately 94% and 95% in tidal flow CW, respectively. In planted horizontal subsurface flow constructed wetland, the CODCr, ammonium and the total nitrogen removal efficiency were proven to be 76%, 49% and 51% because of the positive effect of plants. The removal efficiencies of CODCr, ammonium and total nitrogen in unplanted horizontal subsurface flow constructed wetland were only 70%, 34% and 36%, respectively. Microbial activity was 0.3 mg·g-1 which was improved significantly in the wetlands with tidal flow operation, nearly three times to the horizontal subsurface flow constructed wetlands. The microbial nitrification intensity was found to be interrelated with the ammonium removal efficiencies which showed nitrification activity was the main way of ammonium removal. Moreover, the microbial nitrification intensity can be used as an important indicator to reflect the ammonium removal capacity of wetlands.

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